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A fundamental challenge in improving the file system performance is to design effective block replacement algorithms to minimize buffer cache misses. Despite the well-known interactions between prefetching and caching, almost all buffer cache replacement algorithms have been proposed and studied comparatively without taking into account file system prefetching which exists in all modern operating systems. This paper shows that such kernel prefetching can have a significant impact on thedoi:10.1109/tc.2007.1029 fatcat:5arypx7jmjfmvjzh6kw7vklaiy